Infiniband card fails to initialize after kernel update in RHEL 7.5

Solution Verified - Updated -

Issue

  • Infiniband cards are not coming up after a kernel update.
  • Below error message is shown in the log messages.

    failed to modify QP to RTR: -22
    

Environment

  • Red Hat Enterprise Linux 7.5
  • kernel-3.10.0-862.11.6.el7
  • MTU > 2044

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